JPH066094B2 - Porridge manufacturing equipment - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a porridge manufacturing apparatus capable of automatically making porridge.

[Technical background of the invention and its problems]

As is well known in rice cookers,
When the pot temperature rises to a so-called dry-up state (the water in the pot is almost completely absorbed by rice) and the pot temperature rises above the boiling point of water, it is detected and used for heating the pot. The heater is turned off to complete the rice cooking operation. That is, in such a conventional rice cooker, the heater cannot be automatically turned off while the water in the pan is not absorbed by the rice and remains, and thus it is completely impossible to automatically make the porridge. It was possible. In addition, the conventional rice cooker is configured to keep the heater output as it is even after the water in the pan has boiled. Therefore, the porridge will be made by manually turning off the heater. Even so, since the heater output after boiling water is too large and the hot water in the pan will spill out, it was actually difficult to make porridge by manual operation.

[Object of the Invention]

The present invention has been made in view of the above conventional circumstances,
Its purpose is to make porridge automatically without spilling hot water, and to detect boiling of water in the pot, which is essential for such automatic porridge cooking operation, regardless of the amount of porridge. It is an object of the present invention to provide an apparatus for manufacturing porridge, which has effects such as being able to perform stable porridge cooking at all times.

[Outline of Invention]

In order to achieve the above object, the present invention is provided with a judging means for judging the amount of rice in the pan and a first timer means for performing a longer timer operation when the amount of rice indicated by the judging means is larger. When the temperature of the pot reaches a predetermined temperature slightly lower than the boiling point of water, the timer operation of the first timer means is started, and it is determined that the water in the pot has boiled when the timer operation ends. Then, the output of the electric heating means is automatically reduced according to the result of the determination, and the heating means is automatically activated when the time set in the second timer means elapses after the output of the heating means is reduced. It is designed to be cut off.

Example of Invention

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 2, 1 is a rice cooker body including an inner frame 2 and an outer frame 3, 4 is a lid, 5 is a pot arranged in the inner frame 2, 6 is a heater for heating the pot 5 (the present invention). Equivalent to the heating means)
Reference numeral 7 is an operation panel, and 8 is a thermistor which is a detection means provided to detect the bottom temperature of the pot 5. Further, 9 is a case arranged on the outer bottom of the rice cooker body 1,
In this case 9, a rice cooking control circuit 10 for controlling the on / off of the heater 6 based on the temperature detected by the thermistor 8 and the input from the operation panel 7 is housed.

The rice-cooking control circuit 10 is configured so that it can execute and control not only normal rice-cooking operation and heat-retaining operation but also porridge-cooking operation. FIG. The related circuit configuration of the porridge cooking control which is directly related is shown.

In FIG. 1, 11 is a relay contact, which is connected between both terminals of an AC power supply 12 through the heater 6 in series. Reference numeral 13 is a photocoupler including a light emitting diode 13a and a phototransistor 13b, and the half-wave voltage of the AC power supply 12 is applied to the light emitting diode 13a via the diode 14 and the resistor 15. A DC constant voltage circuit 16 receives the output of the AC power source 12, and the DC constant voltage circuit 16 supplies power to each circuit described below.

That is, 17 is the output of the photocoupler 13 (AC power supply 1
2 is a waveform shaping circuit that shapes the voltage output corresponding to the half-wave output 2) into a rectangular wave, and 18 is a frequency dividing circuit that divides the output of the waveform shaping circuit 17 to generate, for example, a clock pulse P ₁₈ having a cycle of 1 second. Is. Reference numeral 19 is an A-D conversion circuit which receives the output of the thermistor 8, and which outputs a digital temperature signal S ₁₉ corresponding to the temperature of the pan 5 detected by the thermistor 8. Reference numeral 20 is a first storage circuit which stores a predetermined temperature slightly lower than the boiling temperature of water, for example 90 ° C., as a digital value temperature signal S ₂₀ , and 21 is an upper limit temperature, for example 120.
The second memory circuit 22 stores C as a digital value temperature signal S ₂₁ , and 22 is a first measuring temperature, for example 70.
A third memory circuit 23, which stores C as a digital temperature signal S ₂₂ , is a second measuring temperature, for example 80.
℃ which is the fourth memory circuit comprising stored as a temperature signal S ₂₃ of the digital values. Numerals 24 to 40 are fifth to twenty-first memory circuits, and as shown in FIG.
Minutes, 3 minutes, 5 minutes, 4 minutes, 3 minutes, 13 minutes, 10 minutes, 7 minutes,
35 minutes, 30 minutes, 25 minutes, 35 seconds, 30 seconds, 25 seconds, 1
Digital signal time signals S _{24 to} S ₄₀ corresponding to 8 seconds, 15 seconds, and 12 seconds are stored. Reference numerals 41 to 51 denote comparison circuits, which are input values N _A and N for the input terminals A and B, respectively.
_B is outputs a high level signal when the relationship between the N _A ≧ N _B, and outputs a low level signal when the relationship between the N A _{<N B.} Reference numerals 52 and 53 are comparison circuits 43 corresponding to each.
The trigger circuit outputs trigger pulses P ₅₂ and P ₅₃ when it receives a high-level signal from the signal generators 44 and 44. 54
Is a pulse generating circuit, which outputs a start pulse P ₅₄ when the momentary type start switch 7a provided on the operation panel 7 is turned on. 55 and 56 in the counter, which resets the count value to "0" when receiving the start pulse P ₅₄ to the reset terminal R, the clock pulse P ₁₈ to the clock terminal CK
The count value is incremented each time it is received, and each count value is output as a numerical value signal S ₅₅ , ₅₆ . Reference numeral 57 is a cycle counter, which also resets the count value to “0” when the reset terminal R receives the start pulse P ₅₄ and counts up every time the clock terminal CK receives the clock pulse P ₁₈ and is equivalent to 60 seconds. The operation of counting up to the value is repeated, and the count value is output as the numerical signal S ₅₇ . Reference numerals 73 to 76 denote comparison circuits, which have the same configuration as the other comparison circuits 27 to 33.
Reference numerals 58 to 62 denote first to fifth latch circuits, which rewrite their stored contents each time a new signal is input. Reference numerals 63 to 80 denote transfer gates, which allow a signal to pass while receiving a high level signal at the gate terminal. Further, 81, 82 and 83 are RS flip-flops, 84 to 89 are AND circuits, and 90 and 91 are O.
R circuit, 92 is a NOR circuit, and 93, 94 and 95 are inverters. Reference numeral 96 denotes a trigger circuit that outputs a trigger pulse P ₉₆ that becomes high level for a certain period of time when it receives a high level signal from the inverter 95. And 9
An output circuit 7 is an adjusting means, which turns on the relay contact 11 when a high level signal is input.
In the present embodiment, the thermistor 8 and the AD conversion circuit 1
9, the first memory circuit 20 and the trigger circuit 52 constitute the signal output means 98, and the third to sixth memory circuits 2
2 to 25, the comparison circuits 41, 42, 45, 46, the counter 56, the AND circuit 84, and the NOR circuit 92 constitute the determination means 99. Further, the seventh to ninth storage circuits 26 to 28, the comparison circuit 47, the counter 55, the first latch circuit 58, and the transfer gates 63 to 6
5 constitutes the first timer means 100, and
Through the fifteenth memory circuits 32 through 34, the comparison circuit 49, the counter 55, the third latch circuit 60, and the transfer gates 32 through 34, the second timer means 101 is configured, and the sixteenth through the twenty-first memory circuits 35. Through 4
0, comparison circuits 50 and 51, cycle counter 57, fourth and fifth latch circuits 61 and 62, transfer gates 72 to 77, and AND circuits 88 and 89 constitute control means 102.

Next, the operation of the above configuration will be described with reference to FIGS. 3 and 4. Incidentally, FIG. 3 shows a time change characteristic of the temperature detected by the thermistor 8 (that is, the temperature of the pot 5).
The figure shows the time variation characteristics of the output of the heater 6. Now, pan 5
When rice and a predetermined amount of water necessary to cook this rice are stored, and the start switch 7a is turned on in this state, a start pulse _P54 is output from the pulse generation circuit 54, and the start pulse _P54 is output. _The RS flip-flops 81, 82 and 83 are set by ₅₄ , and the counters 55 and 56 and the cycle counter 57 are reset. At this time, since the temperature detected by the thermistor 8 is 90 ° C. or lower, the temperature signal S ₁₉ from the A / D conversion circuit 19 and the temperature signal S from the first storage circuit 20.
₂₀ and S ₁₉ <S ₂₀ , the comparison circuit 43 outputs a low level signal, and the output is inverted by the inverter 93 into a high level signal, and then ORed.
It is given to one input terminal of the AND circuit 87 via the circuit 91. Since a high level signal is applied to the other input terminal of the AND circuit 87 from the set output terminal Q of the RS flip-flop 83 set as described above, a high level signal is output from the AND circuit 87, The output circuit 97 receiving this high-level signal turns on the relay contact 11, and accordingly the heater 6 is energized to start heating the pot 5. The temperature detected by the thermistor 8 rises to 70 ° C. in accordance with the progress of the heating of the pot 5, that is, the porridge cooking operation, so that the temperature signal S ₁₉ from the A / D conversion circuit ₁₉ and the third storage circuit 22 are detected. Temperature signal S
₂₂ and S ₁₉ ≧ S ₂₂ (see FIGS. 3 and 4).
At time t ₁ ), the output of the comparison circuit 41 is inverted to a high level signal. At this time, since the temperature signal S ₁₉ and the temperature signal S ₂₃ (corresponding to 80 ° C.) from the fourth storage circuit _{23 have} a relationship of S ₁₉ <S ₂₃ , the comparison circuit 42 also outputs a high level signal. These comparison circuits 41, 42
The AND circuit 84 which has received the high level signal from the circuit allows the clock pulse P ₁₈ from the frequency dividing circuit 18 to pass therethrough, so that the counter 56 counts up every one second. After this, the temperature detected by the thermistor 8 rises to 80 ° C., so that the temperature signals S ₁₉ and S ₂₃ are changed to S ₁₉ > S.
_{At 23} (time t ₂ ), the output of the comparison circuit 42 is inverted to the low level signal, so that the AND circuit 84 blocks the passage of the clock pulse P ₁₈ and the counter 56.
Counting up is stopped. At this time, when the count value of the counter 56 is equal to or greater than the value corresponding to 5 minutes at the time t ₂ , the numerical signal S ₅₆ from the counter ₅₆ and the time signal S ₂₄ (corresponding to 5 minutes) from the fifth memory circuit 24. )
In addition, since the time signal S ₂₅ (corresponding to 3 minutes) from the sixth memory circuit 25 has a relationship of S ₅₆ ≧ S ₂₄ > S ₂₅ , the comparison circuit 45 outputs the high level signal and the comparison circuit 46 outputs Outputs low level signal, N
The OR circuit 92 outputs a low level signal. When the count value of the counter 56 exceeds the value corresponding to 3 minutes and is less than the value corresponding to 5 minutes at the time t ₂ , the numerical signal S ₅₆ and the time signals S ₂₄ and S ₂₅ are S ₂₄ > S _56.
Because of the relation of> S ₂₅ , both of the comparison circuits 45 and 46 output the low level signal, and the NOR circuit 92 outputs the high level signal. Further, when the count value of the counter 56 is equal to or less than the value corresponding to 3 minutes at the time t ₂ , the numerical value signal S ₅₆ and the temperature signals S ₂₄ , S.
_{Since 25} has a relationship of S ₂₄ > S ₂₅ ≧ S ₅₆ , the high level signal is output only from the comparison circuit 46, and the NOR circuit 92 is configured to output the low level signal. By the way, the time required for the temperature detected by the thermistor 8 to change from 70 ° C. to 80 ° C. has the property that it becomes longer as the heat capacity of the pot 5, that is, the amount of rice and water stored in the pot 5 increases. , Third to sixth memory circuits 2
The determination means 99 including 2 to 25, the comparison circuits 41, 42, 45 and 46, the counter 56, the NOR circuit 92 and the like determines the amount of rice in the pot 5 by utilizing the above property. That is, the judging means 99 detects that the temperature detected by the thermistor 8 is from 70 ° C to 8 ° C.
When the time required to change to 0 ° C. (time t _{1 to} t ₂ ) is 5 minutes or more, in other words, when the amount of rice in the pot 5 is relatively large, only the comparison circuit 45 outputs high. When the level signal is output and given to the transfer gate 78 and the time from time t ₁ to time t ₂ is more than 3 minutes and less than 5 minutes, in other words, the amount of rice in the pot 5 is medium. In such a case, a high level signal is output only from the NOR circuit 92 and is given to the transfer gate 79, and when the above time is 3 minutes or less, in other words, when the amount of rice in the pot is relatively small. In addition, a high level signal is output only from the comparison circuit 46 and given to the transfer gate 80.

Then, at time t _{2, when the} low level signal is output from the comparison circuit 42 as described above, the output is output from the inverter 9
Since the signal is inverted to a high level signal by 5 and then applied to the trigger circuit 96, the trigger circuit 96 outputs a trigger pulse P ₉₆ . Then, the transfer gate 78 which receives the trigger pulse P ₉₆ at its gate terminal,
79 and 80 allow the signal to pass for a short time. Therefore, when the amount of rice in the pot 5 is relatively large, a high level signal is output from the transfer gate 78, and the transfer gate 6 is output by the high level signal.
3, 66, 69, 72 and 75 are in a conductive state. As a result, the contents stored in the first to fifth latch circuits 58 to 62 are stored in the time signal S ₂₆ (5) from the seventh storage circuit 26.
Minutes), the time signal S from the tenth storage circuit 29
₂₉ (corresponding to 13 minutes), the time signal S ₃₂ (corresponding to 35 minutes) from the 13th storage circuit 32, and 16th storage circuit 35
To the time signal S ₃₅ (corresponding to 35 seconds) and the time signal S ₃₈ (corresponding to 18 seconds) from the nineteenth memory circuit 38, respectively. When the amount of rice in the pan 5 is medium, a high level signal is output from the transfer gate 79 and the transfer gates 64, 67, 70, 73,
Since 76 is in the conductive state, the contents stored in the first to fifth latch circuits 58 to 62 are stored in the eighth, eleventh, fourteenth,
Seventeenth and twentieth memory circuits 27, 30, 33, 36, 3
9 temperature signals S ₂₇ (corresponding to 4 minutes), S ₃₀ (1
0 minutes), S ₃₃ (30 minutes), S ₃₆ (30
Seconds) and S ₃₉ (corresponding to 15 seconds). Further, when the amount of rice in the pan 5 is relatively small, a high level signal is output from the transfer gate 80 and the transfer gates 65, 68, 71, 74, 7 are output.
Since 7 is in the conductive state, the contents stored in the first to fifth latch circuits 58 to 62 are stored in the ninth, twelfth, fifteenth, eighteenth, and twenty-first storage circuits 28, 31, 34, 37, 40.
From each time signal S ₂₈ (corresponding to 3 minutes), S ₃₁ (corresponding to 7 minutes), S ₃₄ (corresponding to 25 minutes), S ₃₇ (corresponding to 25 seconds), S ₄₀ (corresponding to 12 seconds) Each can be rewritten.

Now, in the following, for convenience of explanation, when the amount of rice in the pan 5 is relatively large (that is, the first to fifth latch circuits 58 to 62 are respectively time signals S ₂₆ , S ₂₉ , S ₃₂ , S ₃₅ ,
To explain by taking as an example the case of storing S ₃₈ respectively,
When the porridge cooking operation further progresses and the temperature detected by the thermistor 8 rises to 90 ° C. (time t ₃ ), the temperature signal S ₁₉ from the AD conversion circuit 19 and the temperature signal S from the first storage circuit 20 are obtained. ₂₀ becomes a relation of S ₁₉ ≧ S ₂₀ ,
The output of the comparison circuit 43 is inverted into a high level signal. Then, the trigger pulse P which is an auxiliary signal from the trigger circuit 34
₃₄ is output and the RS flip-flops 81 and 82 are reset, so that the AND circuits 85 and 86 receive the high level signals from the reset output terminals of the RS flip-flops 81 and 82 and receive the clock pulse P _18. Will be allowed to pass. Therefore, the counter 55 and the cycle counter 57, which have been in the count stop state until then, count up every one second, and
The timer operation of the second timer means 100, 101 is started. Then ,, After this time t _3, reaches the time t ₄ when time or 5 minutes the first latch circuit 58 is indicated by the time signal S ₂₆ stored has elapsed, the numerical signal S ₅₅ and the time from the counter 55 Signal S ₂₆ and S ₅₅ > S
_Because of the relationship of ₂₆ , the output of the comparison circuit 47 is inverted to a low level signal which is a boiling signal. After the time t ₃ , the time indicated by the time signal S ₂₉ stored in the second latch circuit 59, that is, the time until the time t ₅ at which 13 minutes have elapsed (time at which 8 minutes have elapsed from time t ₄ ) is reached, , The numerical signal S ₅₅ and the time signal S ₂₉ are S ₅₅ ≦ S ₂₉
The comparator circuit 48 outputs a high-level signal because of the above state. Therefore, the AND that receives the high-level signal
The circuit 88 is in a state in which the output signal from the comparison circuit 50 is allowed to pass, but the comparison circuit 50 outputs the numerical signal S ₅₇ from the cycle counter ₅₇ (increases sequentially from “0” to “60” in a cycle of 60 seconds). The numerical value signal) and the time signal S ₃₅ (corresponding to 35 seconds) stored in the fourth latch circuit 61 outputs the high level signal only during the period of S ₅₇ ≦ S ₃₅ , and therefore the AND circuit 88 to 35
The operation in which the low level signal is output for 25 seconds after the high level signal is output for 2 seconds is repeated. Then,
2 after the output circuit 97 turns on the relay contact 11 for 35 seconds
5 seconds will repeat the operation of turning off, resulting in a period of time t ₄ ~t _5, the heater 6 is the duty ratio (3
(5/60) × 100≈58.3%, and the output of the heater 6 is reduced to about 58.3%. Then, after the time t ₅ when 13 minutes have passed after the time t _3, the numerical signal S ₅₅ from the counter ₅₅ and the time signal S ₂₉ from the second latch circuit 59 are S _55.
> S ₂₉ , the output of the comparison circuit 48 is inverted to a low level signal, and the AND circuit 88 causes the comparison circuit 5
The output signal from 0 is blocked. After this time t ₅ , another 22 minutes have passed, and time t ₆ (time t ₃
In the period from the passage of 35 minutes from the time), the numerical signal S ₅₅ and the time signal S ₃₂ (corresponding to 32 minutes) stored by the third latch circuit 60 are S ₅₅ ≦ S _32.
Therefore, the comparison circuit 49 holds the state in which it outputs the high level signal. Therefore, the AND circuit 89 remains allowed to pass the output signal from the comparison circuit 51. However, the comparison circuit 51 does not allow the numerical signal S ₅₇ from the cycle counter 57 and the time stored in the fifth latch circuit 62 to be stored. The signal S ₃₈ (corresponding to 18 seconds) outputs a high-level signal only during a period in which S ₅₇ ≦ S ₃₈ .
Thus, the operation in which the AND circuit 89 outputs the high level signal for 18 seconds and then the low level signal for 42 seconds is repeated. Therefore, in this case, the output circuit 97
There now repeated operation that 42 seconds off after turning on the relay contact 11 18 seconds, resulting in a time t ₅ ~t
During the period of ₆ , the heater 6 has a duty ratio (18/60) × 1
The electric power is supplied at 00 = 30%, and the output of the heater 6 is reduced to 30% of the rated value. Then, time t ₃
After the time t ₆ when 35 minutes have passed, the counter 5
Since the numerical signal S ₅₅ from 5 and the time signal S ₃₂ stored in the third latch circuit 60 have a relationship of S ₅₅ > S ₃₂ , the output of the comparison circuit 49 is inverted to a low level signal, and A
The ND circuit 51 blocks the passage of the output signal from the comparison circuit 89. At the same time, the low-level signal is inverted by the inverter 94 into a high-level signal that is a stop signal, so that the RS flip-flop 83 is reset, and the output circuit 97 turns off the relay contact 11 accordingly. Then, the heater 6 is cut off and the porridge cooking operation is completed.

In addition, when the amount of rice in the pan 5 is medium, that is, the first to the fifth
Latch circuits 58 to 62 of the time signals S ₂₇ , S ₃₀ ,
When S ₃₃ , S ₃₆ , and S ₃₉ are stored, respectively, as can be understood from the above-described operation, the time t _{3 at} which the temperature detected by the thermistor 8 reaches 90 ° C. 4 minutes has elapsed 4 _The low level signal is output from the comparison circuit 47 at _4, and the output of the heater 6 is (30/60) × 100 = at the rated time from time t ₄ to time t ₅ when 6 minutes have elapsed.
The output of the heater 6 is reduced to 50%, and the output of the heater 6 is further reduced to (15/60) × 100 = 25% of the rated time from time t ₅ to time t ₆ when 20 minutes have passed. Is. When the amount of rice in the pan 5 is relatively small, that is, the first to fifth latch circuits 58 to 62 store the temperature signals S ₂₈ , S ₃₁ , S ₃₄ , S ₃₇ , and S ₄₀ , respectively. In some cases, a low level signal is output from the comparison circuit 47 at time t _{4 when} 3 minutes have passed since the time t ₃ when the temperature detected by the thermistor 8 reached 90 ° C., and a time when 4 minutes have passed since this time t _4. Until t _5, the output of the heater 6 is reduced to (25/60) × 100≈41.7% of the rated value, and between this time t ₅ and time t ₆ when 18 minutes have elapsed. When the output of the heater 6 is (1
2/60) × 100 = 20%.

According to the above-described embodiment, after the porridge cooking operation in response to the ON operation of the start switch 7a is started, the comparison circuit 47 in the first timer means 100 outputs a low level signal as a boiling signal. During that time (in other words, until the inside of the pan 5 is in a boiling state), the heater 6 is caused to generate heat at a rated output to quickly boil, and after such boiling, the output of the heater 6 is increased. The state in which the voltage is lowered is set to the inverter 9 in the second timer means 101.
The heater 6 is automatically turned off after being held for 30 minutes until a high level signal, which is a stop signal, is output from No. 4. Therefore, by simply turning on the start switch 7a, the porridge can be automatically made in the shortest possible time, and in this case, after the water in the pot 5 boils, the output of the heater 6 is changed. Unlike the conventional case, it does not become excessively large and there is no risk of spilling hot water. Particularly, in this embodiment, the first timer means 10 outputs a boiling signal indicating that the water in the pot 5 is in a boiling state after the temperature of the pot 5 reaches 90 ° C., which is slightly lower than the boiling temperature of water.
The output is made at the time when a predetermined time (3 minutes, 4 minutes, or 5 minutes) set to 0 has elapsed, and the following effects can be achieved by this. That is, it is generally difficult to quickly and surely detect that the water is in a boiling state, and the cost is high. However, according to the above configuration, the pot 5
If the state in which the heater 6 is heated at the rated output after the temperature reaches 90 ° C. is continued for an appropriate time (3 to 5 minutes in the present embodiment) set in the first timer means 100, the pot 5 is always produced.
A boiling signal is output in anticipation that the water in the pot will be in a boiling state, so that boiling detection of the water in the pot 5 can be surely performed. Particularly in this case, in the present embodiment, the time set in the first timer means 100 is automatically changed according to the amount of rice in the pan 5 (that is, the amount of porridge), so that the boiling detection The error can be made extremely small. Further, in this embodiment, the time until the heater 6 is cut off to stop the porridge cooking operation by outputting the stop signal from the inverter 49 after the boiling signal is output, and the heater 6 after the boiling signal is output. The degree of output decrease is also automatically changed according to the amount of rice (rice cooked) in the pan 5, so that the following effects can be obtained. That is, when the amount of porridge cooked is relatively large, the time required for the porridge to be cooked after the water in the pot 5 is in a boiling state is prolonged, and when the amount of porridge cooked is relatively small. The above-mentioned required time is shortened. Therefore, according to the structure of the present embodiment, the porridge cooking operation which is practically realized and has little waste can be performed.

In the above embodiment, the output of the heater 6 is reduced in two steps, but it may be reduced in only one step.

〔The invention's effect〕

According to the present invention, as described above, it is possible to provide a novel porridge production apparatus that has not been available in the past that can automatically build porridge without spilling hot water, and particularly according to the present invention. The boiling of water in the pot, which is indispensable for the automatic porridge cooking operation, can be detected accurately regardless of the porridge cooking amount, and stable porridge cooking can always be performed.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a block diagram of an electrical structure, FIG. 2 is a side view showing a part of the entire structure in a partially broken manner, and FIGS. It is a temperature characteristic curve figure and an output characteristic curve figure for use. In the figure, 5 is a pan, 6 is a heater (heating means), 8 is a thermistor (detection means), 97 is an output circuit (adjustment means), 98 is a signal output means, 99 is a determination means, and 100 is a first timer means. , 101 is second timer means, and 102 is control means.

Front Page Continuation (72) Inventor Teruo Aoshima 4-21, Yoshihara-cho, Nishi-ku, Nagoya-shi, Aichi Prefecture Nagoya factory (56) References JP-A-55-148522 (JP, A) JP-A-59- 137018 (JP, A) JP 59-57617 (JP, A) JP 61-92631 (JP, A)

Claims (2)

[Claims] 1. An electric heating means for heating a pan, an adjusting means capable of adjusting the output of the heating means, a detecting means for detecting the temperature of the pan, and a temperature detected by the detecting means is a boiling point of water. Signal output means for outputting an auxiliary signal when the temperature reaches a temperature slightly lower than the temperature, determination means for determining the amount of rice in the pot, and the longer the amount of rice indicated by the determination means, the longer the time. First timer means that is provided to perform the timer operation, starts the timer operation in synchronization with the output of the auxiliary signal, and outputs a boiling signal in response to the end of the timer operation, and after the boiling signal is output. Second timer means for outputting a stop signal when a set time has elapsed, and output of the heating means is reduced by the adjusting means when the boiling signal is output, and then the stop signal is output. Porridge manufacturing apparatus characterized by comprising a control means for-energized the heating means can. 2. The determination means is configured to determine the amount of rice based on the time required for the temperature of the pan to rise from the first weighing temperature to the second weighing temperature higher than this. The porridge manufacturing apparatus according to claim 1, wherein